Add missing send / sync impls and make rasterize node async

node-graph/libraries/core-types/src/registry.rs

@@ -180,6 +180,14 @@ impl std::fmt::Debug for EdgeHandle {
 	}
 }
 
+// SAFETY: wasm is single threaded, so the marker-free payload never actually crosses a thread;
+// mirrors the old NodeContainer assertion that let the executor live in a sync static.
+#[cfg(target_family = "wasm")]
+unsafe impl Send for EdgeHandle {}
+// SAFETY: as in Send.
+#[cfg(target_family = "wasm")]
+unsafe impl Sync for EdgeHandle {}
+
 impl EdgeHandle {
 	pub fn new<T: 'static>(node: std::sync::Arc<ErasedGNode<T>>) -> Self {
 		Self::new_erased(node, edge_type::<T>())

node-graph/nodes/gstd/src/platform_application_io.rs

@@ -194,7 +194,7 @@ fn create_canvas(_: impl Ctx) -> CanvasHandle {
 /// Renders a view of the input graphic within an area defined by the *Footprint*.
 #[cfg(target_family = "wasm")]
 #[node_macro::node(category(""))]
-fn rasterize<T: WasmNotSend + Clone>(
+async fn rasterize<T: WasmNotSend + Clone>(
 	_: impl Ctx,
 	#[implementations(
 		List<Vector>,